Automatic martini shaker



FIG. 1 is a front perspective view of an automatic martini shaker illustrating my new design, wherein the shaker has a raised upper portion;

FIG. 2 is a front view of the automatic martini shaker of FIG. 1 with a lowered upper portion;

FIG. 3 is a side view of the automatic martini shaker of FIG. 2;

FIG. 4 is a side view of the automatic martini shaker of FIG. 1;

FIG. 5 is a top view of the automatic martini shaker of FIG. 1, with the upper portion removed for ease of illustration;

FIG. 6 is a top view of the automatic martini shaker of FIG. 1 with the upper portion attached; and,

FIG. 7 is a bottom view of the automatic martini shaker of FIG. 1. 

The ornamental design for an automatic martini shaker, as shown and described. 